Fix up examples

capnp/capabilityHelper.h

@@ -61,6 +61,7 @@ void check_py_error() {
     }
 }
 
+// TODO: need to decref error_func as well on successful run
 PyObject * wrapPyFunc(PyObject * func, PyObject * arg) {
     PyObject * result = PyObject_CallFunctionObjArgs(func, arg, NULL);
     Py_DECREF(func);

capnp/capnp.pyx

@@ -1581,6 +1581,10 @@ cdef class RpcServer:
     def __dealloc__(self):
         del self.thisptr
 
+    def run_forever(self):
+        p = PromiseFulfillerPair()
+        self.loop.wait(p)
+
     # TODO: add restore functionality here?
 
 cdef class FdAsyncIoStream: